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Публикации с меткой ‘PARTITION BY RANGE’

Oracle Создание PARTITION BY RANGE по полю DATE

21 Ноябрь 2012 1 комментарий

Скрипт помогающий создать PARTITION BY RANGE по полю DATE

SET LINESIZE 150
SET SERVEROUTPUT ON SIZE 1000000
WHENEVER SQLERROR CONTINUE
SPOOL C:\create_partition_date.log
declare
 iter number;
 l_date_start date := to_date('01-11-2011','dd-mm-yyyy');
 l_date_end   date := to_date('01-01-2023','dd-mm-yyyy');
 l_name_part  varchar2(20) := 'TEST';
 l_part_field varchar2(20) := 'MY_DATE';
begin
 dbms_output.put_line('PARTITION BY RANGE('||l_part_field||')');
 dbms_output.put_line('(');
 dbms_output.put_line(' PARTITION '||l_name_part
                        ||'_MIN     VALUES LESS THAN (to_date('''
                        ||to_char(add_months(l_date_start,-1),'dd-mm-yyyy')
                        ||''',''dd-mm-yyyy''))');
 for j in (
              with t as (
              select l_date_start d1,
                     l_date_end d2
              from dual
            )
            --
            select decode(level,1,d1,
                          trunc(add_months(d1,level-1),'mm')
                         ) as date_from
            from t
            connect by add_months(trunc(d1,'mm'),level-1) <= d2
           ) 
 loop
   dbms_output.put_line(',PARTITION '||l_name_part||'_'
                        ||to_char(add_months(j.date_from,-1),'mm_yyyy')
                        ||' VALUES LESS THAN (to_date('''
                        ||to_char(j.date_from,'dd-mm-yyyy')
                        ||''',''dd-mm-yyyy''))');
 end loop;
 dbms_output.put_line(',PARTITION '||l_name_part
                      ||'_MAX     VALUES LESS THAN (MAXVALUE)'); 
 dbms_output.put_line(')');
end;
/
spool off

PARTITION BY RANGE(MY_DATE)
(
 PARTITION TEST_MIN     VALUES LESS THAN (to_date('01-10-2011','dd-mm-yyyy'))
,PARTITION TEST_10_2011 VALUES LESS THAN (to_date('01-11-2011','dd-mm-yyyy'))
,PARTITION TEST_11_2011 VALUES LESS THAN (to_date('01-12-2011','dd-mm-yyyy'))
...
,PARTITION TEST_11_2022 VALUES LESS THAN (to_date('01-12-2022','dd-mm-yyyy'))
,PARTITION TEST_12_2022 VALUES LESS THAN (to_date('01-01-2023','dd-mm-yyyy'))
,PARTITION TEST_MAX     VALUES LESS THAN (MAXVALUE)
)
 
PL/SQL procedure successfully completed
SQL> spool off
Stopped spooling to C:\create_partition_date.log
Categories: SQL Tags: , ,